Drinking-water supply for refrigerators



' 1,618,514 L.. G. coPEMAN DRINKING WATER SUPPLY Fon REFRIGERATORS Feb.22, 1927,

Filed Feb. 15,` ms 2 'sheets-sheet 1 IN VEN TOR.

- A 1,618,51` Feb. 22, 1927. L. G. COPEMAN `4f DRINKING' WATER SUPPLY.FOR REFRIGERTORS Filed Feb. 15. 1926 2 Sheets-snnt 2 Z a ,2,70 lggzn@ ATTORNEY.

Patented `l" eb. `22,- 1927.

'UNITED STATES PATENT oFFl-CE.'

LLOYD G. COPEMAN, OF FLINT, MICHIGAN, ASSIGNOR TO COPEMAN LABORATORIESCOMPANY, F FLINT, MICHIGAN, `.A CORPORATION OF MICHIGAN.

il)RINKDSI'G-WATEIt SUPPLY FOR REFBIGERATORS.

Application led `February 15, 1928. Serial No. 88,344.

This invention relates to power refrigeration and the cooling ofdrinking water.

Domestic refrigeration is fast coming into its own, but the abledrinking water is a serious one in these refrigerators on account of therelatively low temperatures at which they operate. Drinking water atvery low temperatures, just about freezing, is very unpalatable. Thesedomestic refrigerators are operated ordinarily at a temperaturesomewhere down around zeroin the brine chamber and solne where aboutfreezingin the food chamber. The food chamber is always protectedagainst freezing by reason of the setting of the thermostatsuiiic-iently above a freezing temperature. Y Where a water tank is seton a partition wall between the food chamber and what corresponds withthe ice chamber, the waterA will get so cold thatit will either freezeor else be so very low in temperature as to be practically undrinkable.When it. is

understood that the best well water runs somewhere around 40 and 50degrees in temperature, it will be appreciated that water delivered froman iceless refrigerator down around the freezing point is not veryserviceable for domestic consumption.

It is the object of the present invention to carry this service waterline in such heat iexchan relation with the interior as to cool t ewater but to keep it at a temperature which tends to approximate thewater very palatable to drink. In the drawings:

1 is a vertical section of the refrigeracross section on the line 2'-2problem of providing suittemperature of well water and make the 1 .icepi such as Oxy-chloride cement. This comprises a mixture of magnesiumoxide, fine sand or ground flint,- or both, to which is added suflcientmagnesium chloride solution at 26 Baume to make a composition ofmaterial that will easily pour. However,A

this may be varied withinwide limits, especially where it is trowelledon, as in such/a case very much less magnesium chloride is used; v

In the corkboard which lines the side and back wall of the food chamberI cut across grooves d which are joined by small connected grooves atthe ends to receive the coils of pipe coils of pipe e. After these arepreferably are laid in the grooves they tied in place by means of thecords f whic are inserted through small holes punched out before thecorkboard is put in place. A core g is then inserted in the mould, themould being formed by the wooden exterior and the corkboards. This coremay be of metal or may be stone core. The stone will then flow down intothe space between the cork and the core, as is clearly shown in Fig. 4.It will be wondered ow the stone gets in behind the pipe; the pipe isapparently floated in the stone. I find that measurably .good resultsoccur in centralizing the ipevor floating it in the stone b reason ovlbrating the mould which I pre erably do by means of a suitablevibrator, as described andA claimed in m conding application, Serial No.84514, tiled an. 28, -926.

At any rate this method of manufacture serves to get the water pipes onthe back of the inside cock ofthe refrigerator with more or less of thestone covering the back of the pipes.

I find that by joinin numerous convoluf tions of pipe to the bac of twowalls of the food chamber that with the refrigerator` that has its foodchamber kept at most desirable temperature, I get water that is cooledbut which is properly moderated to the sensibilities of the palate.

vWhat I claim is:

1. In a refri rator, the combination of a stone interior definingchambers, including a food chamber, and a water servsupported to theoutside of the foodc amber in proximity with its lining s? as to get aproper cooling and moderation of the water by heat exchange through thelining.

2. In a refrigerator, the combination of a cabinet, a stonework liningtherefor, defining one or more chambers, including a food chamber and aWater service pipe for drinking water embedded in the stonework lining.

3. [In a refrigerator, the combination of a cabinet, including heatinsulating material, and a lining defining one or more chambersincluding a food chamber, a power-operated heat abstracting unit in oneof the chambers, and a Water service pipe supported on the outside ofthe stone lining of the food chamber in recesses contained in the heatinsulating material. l

4. In a refrigerator, the combination of a cabinet divided into aplurality of chambers, a power-operated heat abstracting unit located inone chamber, a stone lining for the food chamber, and a Waterl servicepipe for drinking purposes supported in heat conducting relation Withthe stonework to the outside of the food chamber.

In testimony whereof I have affixed my signature.

LLOYD G. COPEMAN.

